可见到疟色素的疟原虫的期是()
A、环状体
B、滋养体
C、裂殖体
D、配子体
参考答案:B, C, D
I had expected to come over to see you last night, but someone ______ and I couldn’t get away.
A.called
B.had called
C.would call
D.would have called
最常见的良性骨肿瘤为()
A.骨髓瘤
B.骨软骨瘤
C.骨巨细胞瘤
D.骨囊肿
E.骨瘤